/*
 ### jQuery Multiple File Upload Plugin v1.47 - 2010-03-26 ###
 * Home: http://www.fyneworks.com/jquery/multiple-file-upload/
 * Code: http://code.google.com/p/jquery-multifile-plugin/
 *
 * Dual licensed under the MIT and GPL licenses:
 *   http://www.opensource.org/licenses/mit-license.php
 *   http://www.gnu.org/licenses/gpl.html
 ###
 */

/*# AVOID COLLISIONS #*/
;
if (window.jQuery) (function ($) {
    /*# AVOID COLLISIONS #*/

    // plugin initialization
    $.fn.MultiFile = function (options) {
        if (this.length == 0) return this; // quick fail

        // Handle API methods
        if (typeof arguments[0] == 'string') {
            // Perform API methods on individual elements
            if (this.length > 1) {
                var args = arguments;
                return this.each(function () {
                    $.fn.MultiFile.apply($(this), args);
                });
            }
            ;
            // Invoke API method handler
            $.fn.MultiFile[arguments[0]].apply(this, $.makeArray(arguments).slice(1) || []);
            // Quick exit...
            return this;
        }
        ;

        // Initialize options for this call
        var options = $.extend(
            {}/* new object */,
            $.fn.MultiFile.options/* default options */,
            options || {} /* just-in-time options */
        );

        // Empty Element Fix!!!
        // this code will automatically intercept native form submissions
        // and disable empty file elements
        $('form')
            .not('MultiFile-intercepted')
            .addClass('MultiFile-intercepted')
            .submit($.fn.MultiFile.disableEmpty);

        //### http://plugins.jquery.com/node/1363
        // utility method to integrate this plugin with others...
        if ($.fn.MultiFile.options.autoIntercept) {
            $.fn.MultiFile.intercept($.fn.MultiFile.options.autoIntercept /* array of methods to intercept */);
            $.fn.MultiFile.options.autoIntercept = null;
            /* only run this once */
        }
        ;

        // loop through each matched element
        this
            .not('.MultiFile-applied')
            .addClass('MultiFile-applied')
            .each(function () {
                //#####################################################################
                // MAIN PLUGIN FUNCTIONALITY - START
                //#####################################################################

                // BUG 1251 FIX: http://plugins.jquery.com/project/comments/add/1251
                // variable group_count would repeat itself on multiple calls to the plugin.
                // this would cause a conflict with multiple elements
                // changes scope of variable to global so id will be unique over n calls
                window.MultiFile = (window.MultiFile || 0) + 1;
                var group_count = window.MultiFile;

                // Copy parent attributes - Thanks to Jonas Wagner
                // we will use this one to create new input elements
                var MultiFile = {e: this, E: $(this), clone: $(this).clone()};

                //===

                //# USE CONFIGURATION
                if (typeof options == 'number') options = {max: options};
                var o = $.extend({},
                    $.fn.MultiFile.options,
                    options || {},
                    ($.metadata ? MultiFile.E.metadata() : ($.meta ? MultiFile.E.data() : null)) || {}, /* metadata options */
                    {} /* internals */
                );
                // limit number of files that can be selected?
                if (!(o.max > 0) /*IsNull(MultiFile.max)*/) {
                    o.max = MultiFile.E.attr('maxlength');
                    if (!(o.max > 0) /*IsNull(MultiFile.max)*/) {
                        o.max = (String(MultiFile.e.className.match(/\b(max|limit)\-([0-9]+)\b/gi) || ['']).match(/[0-9]+/gi) || [''])[0];
                        if (!(o.max > 0)) o.max = -1;
                        else           o.max = String(o.max).match(/[0-9]+/gi)[0];
                    }
                }
                ;
                o.max = new Number(o.max);
                // limit extensions?
                o.accept = o.accept || MultiFile.E.attr('accept') || '';
                if (!o.accept) {
                    o.accept = (MultiFile.e.className.match(/\b(accept\-[\w\|]+)\b/gi)) || '';
                    o.accept = new String(o.accept).replace(/^(accept|ext)\-/i, '');
                }
                ;

                //===

                // APPLY CONFIGURATION
                $.extend(MultiFile, o || {});
                MultiFile.STRING = $.extend({}, $.fn.MultiFile.options.STRING, MultiFile.STRING);

                //===

                //#########################################
                // PRIVATE PROPERTIES/METHODS
                $.extend(MultiFile, {
                    n: 0, // How many elements are currently selected?
                    slaves: [], files: [],
                    instanceKey: MultiFile.e.id || 'MultiFile' + String(group_count), // Instance Key?
                    generateID: function (z) {
                        return MultiFile.instanceKey + (z > 0 ? '_F' + String(z) : '');
                    },
                    trigger: function (event, element) {
                        var handler = MultiFile[event], value = $(element).attr('value');
                        if (handler) {
                            var returnValue = handler(element, value, MultiFile);
                            if (returnValue != null) return returnValue;
                        }
                        return true;
                    }
                });

                //===

                // Setup dynamic regular expression for extension validation
                // - thanks to John-Paul Bader: http://smyck.de/2006/08/11/javascript-dynamic-regular-expresions/
                if (String(MultiFile.accept).length > 1) {
                    MultiFile.accept = MultiFile.accept.replace(/\W+/g, '|').replace(/^\W|\W$/g, '');
                    MultiFile.rxAccept = new RegExp('\\.(' + (MultiFile.accept ? MultiFile.accept : '') + ')$', 'gi');
                }
                ;

                //===

                // Create wrapper to hold our file list
                MultiFile.wrapID = MultiFile.instanceKey + '_wrap'; // Wrapper ID?
                MultiFile.E.wrap('<div class="MultiFile-wrap" id="' + MultiFile.wrapID + '"></div>');
                MultiFile.wrapper = $('#' + MultiFile.wrapID + '');

                //===

                // MultiFile MUST have a name - default: file1[], file2[], file3[]
                MultiFile.e.name = MultiFile.e.name || 'file' + group_count + '[]';

                //===

                if (!MultiFile.list) {
                    // Create a wrapper for the list
                    // * OPERA BUG: NO_MODIFICATION_ALLOWED_ERR ('list' is a read-only property)
                    // this change allows us to keep the files in the order they were selected
                    MultiFile.wrapper.append('<div class="MultiFile-list" id="' + MultiFile.wrapID + '_list"></div>');
                    MultiFile.list = $('#' + MultiFile.wrapID + '_list');
                }
                ;
                MultiFile.list = $(MultiFile.list);

                //===

                // Bind a new element
                MultiFile.addSlave = function (slave, slave_count) {
                    //if(window.console) console.log('MultiFile.addSlave',slave_count);

                    // Keep track of how many elements have been displayed
                    MultiFile.n++;
                    // Add reference to master element
                    slave.MultiFile = MultiFile;

                    // BUG FIX: http://plugins.jquery.com/node/1495
                    // Clear identifying properties from clones
                    if (slave_count > 0) slave.id = slave.name = '';

                    // Define element's ID and name (upload components need this!)
                    //slave.id = slave.id || MultiFile.generateID(slave_count);
                    if (slave_count > 0) slave.id = MultiFile.generateID(slave_count);
                    //FIX for: http://code.google.com/p/jquery-multifile-plugin/issues/detail?id=23

                    // 2008-Apr-29: New customizable naming convention (see url below)
                    // http://groups.google.com/group/jquery-dev/browse_frm/thread/765c73e41b34f924#
                    slave.name = String(MultiFile.namePattern
                        /*master name*/.replace(/\$name/gi, $(MultiFile.clone).attr('name'))
                        /*master id  */.replace(/\$id/gi, $(MultiFile.clone).attr('id'))
                        /*group count*/.replace(/\$g/gi, group_count)//(group_count>0?group_count:''))
                        /*slave count*/.replace(/\$i/gi, slave_count)//(slave_count>0?slave_count:''))
                    );

                    // If we've reached maximum number, disable input slave
                    if ((MultiFile.max > 0) && ((MultiFile.n - 1) > (MultiFile.max)))//{ // MultiFile.n Starts at 1, so subtract 1 to find true count
                        slave.disabled = true;
                    //};

                    // Remember most recent slave
                    MultiFile.current = MultiFile.slaves[slave_count] = slave;

                    // We'll use jQuery from now on
                    slave = $(slave);

                    // Clear value
                    slave.val('').attr('value', '')[0].value = '';

                    // Stop plugin initializing on slaves
                    slave.addClass('MultiFile-applied');

                    // Triggered when a file is selected
                    slave.change(function () {
                        //if(window.console) console.log('MultiFile.slave.change',slave_count);

                        // Lose focus to stop IE7 firing onchange again
                        $(this).blur();

                        //# Trigger Event! onFileSelect
                        if (!MultiFile.trigger('onFileSelect', this, MultiFile)) return false;
                        //# End Event!

                        //# Retrive value of selected file from element
                        var ERROR = '', v = String(this.value || ''/*.attr('value)*/);

                        // check extension
                        if (MultiFile.accept && v && !v.match(MultiFile.rxAccept))//{
                            ERROR = MultiFile.STRING.denied.replace('$ext', String(v.match(/\.\w{1,4}$/gi)));
                        //}
                        //};

                        // Disallow duplicates
                        for (var f in MultiFile.slaves)//{
                            if (MultiFile.slaves[f] && MultiFile.slaves[f] != this)//{
                            //console.log(MultiFile.slaves[f],MultiFile.slaves[f].value);
                                if (MultiFile.slaves[f].value == v)//{
                                    ERROR = MultiFile.STRING.duplicate.replace('$file', v.match(/[^\/\\]+$/gi));
                        //};
                        //};
                        //};

                        // Create a new file input element
                        var newEle = $(MultiFile.clone).clone();// Copy parent attributes - Thanks to Jonas Wagner
                        //# Let's remember which input we've generated so
                        // we can disable the empty ones before submission
                        // See: http://plugins.jquery.com/node/1495
                        newEle.addClass('MultiFile');

                        // Handle error
                        if (ERROR != '') {
                            // Handle error
                            MultiFile.error(ERROR);

                            // 2007-06-24: BUG FIX - Thanks to Adrian Wr�bel <adrian [dot] wrobel [at] gmail.com>
                            // Ditch the trouble maker and add a fresh new element
                            MultiFile.n--;
                            MultiFile.addSlave(newEle[0], slave_count);
                            slave.parent().prepend(newEle);
                            slave.remove();
                            return false;
                        }
                        ;

                        // Hide this element (NB: display:none is evil!)
                        $(this).css({ position: 'absolute', top: '-3000px' });

                        // Add new element to the form
                        slave.after(newEle);

                        // Update list
                        MultiFile.addToList(this, slave_count);

                        // Bind functionality
                        MultiFile.addSlave(newEle[0], slave_count + 1);

                        //# Trigger Event! afterFileSelect
                        if (!MultiFile.trigger('afterFileSelect', this, MultiFile)) return false;
                        //# End Event!

                    }); // slave.change()

                    // Save control to element
                    $(slave).data('MultiFile', MultiFile);

                };// MultiFile.addSlave
                // Bind a new element


                // Add a new file to the list
                MultiFile.addToList = function (slave, slave_count) {
                    //if(window.console) console.log('MultiFile.addToList',slave_count);

                    //# Trigger Event! onFileAppend
                    if (!MultiFile.trigger('onFileAppend', slave, MultiFile)) return false;
                    //# End Event!

                    // Create label elements
                    var
                        r = $('<div class="MultiFile-label"></div>'),
                        v = String(slave.value || ''/*.attr('value)*/),
                        a = $('<span class="MultiFile-title" title="' + MultiFile.STRING.selected.replace('$file', v) + '">' + MultiFile.STRING.file.replace('$file', v.match(/[^\/\\]+$/gi)[0]) + '</span>'),
                        b = $('<a class="MultiFile-remove" href="#' + MultiFile.wrapID + '">' + MultiFile.STRING.remove + '</a>');

                    // Insert label
                    MultiFile.list.append(
                        r.append(b, ' ', a)
                    );

                    b
                        .click(function () {

                            //# Trigger Event! onFileRemove
                            if (!MultiFile.trigger('onFileRemove', slave, MultiFile)) return false;
                            //# End Event!

                            MultiFile.n--;
                            MultiFile.current.disabled = false;

                            // Remove element, remove label, point to current
                            MultiFile.slaves[slave_count] = null;
                            $(slave).remove();
                            $(this).parent().remove();

                            // Show most current element again (move into view) and clear selection
                            $(MultiFile.current).css({ position: '', top: '' });
                            $(MultiFile.current).reset().val('').attr('value', '')[0].value = '';

                            //# Trigger Event! afterFileRemove
                            if (!MultiFile.trigger('afterFileRemove', slave, MultiFile)) return false;
                            //# End Event!

                            return false;
                        });

                    //# Trigger Event! afterFileAppend
                    if (!MultiFile.trigger('afterFileAppend', slave, MultiFile)) return false;
                    //# End Event!

                }; // MultiFile.addToList
                // Add element to selected files list


                // Bind functionality to the first element
                if (!MultiFile.MultiFile) MultiFile.addSlave(MultiFile.e, 0);

                // Increment control count
                //MultiFile.I++; // using window.MultiFile
                MultiFile.n++;

                // Save control to element
                MultiFile.E.data('MultiFile', MultiFile);


                //#####################################################################
                // MAIN PLUGIN FUNCTIONALITY - END
                //#####################################################################
            }); // each element
    };

    /*--------------------------------------------------------*/

    /*
     ### Core functionality and API ###
     */
    $.extend($.fn.MultiFile, {
        /**
         * This method removes all selected files
         *
         * Returns a jQuery collection of all affected elements.
         *
         * @name reset
         * @type jQuery
         * @cat Plugins/MultiFile
         * @author Diego A. (http://www.fyneworks.com/)
         *
         * @example $.fn.MultiFile.reset();
         */
        reset: function () {
            var settings = $(this).data('MultiFile');
            //if(settings) settings.wrapper.find('a.MultiFile-remove').click();
            if (settings) settings.list.find('a.MultiFile-remove').click();
            return $(this);
        },


        /**
         * This utility makes it easy to disable all 'empty' file elements in the document before submitting a form.
         * It marks the affected elements so they can be easily re-enabled after the form submission or validation.
         *
         * Returns a jQuery collection of all affected elements.
         *
         * @name disableEmpty
         * @type jQuery
         * @cat Plugins/MultiFile
         * @author Diego A. (http://www.fyneworks.com/)
         *
         * @example $.fn.MultiFile.disableEmpty();
         * @param String class (optional) A string specifying a class to be applied to all affected elements - Default: 'mfD'.
         */
        disableEmpty: function (klass) {
            klass = (typeof(klass) == 'string' ? klass : '') || 'mfD';
            var o = [];
            $('input:file.MultiFile').each(function () {
                if ($(this).val() == '') o[o.length] = this;
            });
            return $(o).each(function () {
                this.disabled = true
            }).addClass(klass);
        },


        /**
         * This method re-enables 'empty' file elements that were disabled (and marked) with the $.fn.MultiFile.disableEmpty method.
         *
         * Returns a jQuery collection of all affected elements.
         *
         * @name reEnableEmpty
         * @type jQuery
         * @cat Plugins/MultiFile
         * @author Diego A. (http://www.fyneworks.com/)
         *
         * @example $.fn.MultiFile.reEnableEmpty();
         * @param String klass (optional) A string specifying the class that was used to mark affected elements - Default: 'mfD'.
         */
        reEnableEmpty: function (klass) {
            klass = (typeof(klass) == 'string' ? klass : '') || 'mfD';
            return $('input:file.' + klass).removeClass(klass).each(function () {
                this.disabled = false
            });
        },


        /**
         * This method will intercept other jQuery plugins and disable empty file input elements prior to form submission
         *

         * @name intercept
         * @cat Plugins/MultiFile
         * @author Diego A. (http://www.fyneworks.com/)
         *
         * @example $.fn.MultiFile.intercept();
         * @param Array methods (optional) Array of method names to be intercepted
         */
        intercepted: {},
        intercept: function (methods, context, args) {
            var method, value;
            args = args || [];
            if (args.constructor.toString().indexOf("Array") < 0) args = [ args ];
            if (typeof(methods) == 'function') {
                $.fn.MultiFile.disableEmpty();
                value = methods.apply(context || window, args);
                //SEE-http://code.google.com/p/jquery-multifile-plugin/issues/detail?id=27
                setTimeout(function () {
                    $.fn.MultiFile.reEnableEmpty()
                }, 1000);
                return value;
            }
            ;
            if (methods.constructor.toString().indexOf("Array") < 0) methods = [methods];
            for (var i = 0; i < methods.length; i++) {
                method = methods[i] + ''; // make sure that we have a STRING
                if (method) (function (method) { // make sure that method is ISOLATED for the interception
                    $.fn.MultiFile.intercepted[method] = $.fn[method] || function () {
                    };
                    $.fn[method] = function () {
                        $.fn.MultiFile.disableEmpty();
                        value = $.fn.MultiFile.intercepted[method].apply(this, arguments);
                        //SEE-http://code.google.com/p/jquery-multifile-plugin/issues/detail?id=27
                        setTimeout(function () {
                            $.fn.MultiFile.reEnableEmpty()
                        }, 1000);
                        return value;
                    }; // interception
                })(method); // MAKE SURE THAT method IS ISOLATED for the interception
            }
            ;// for each method
        } // $.fn.MultiFile.intercept

    });

    /*--------------------------------------------------------*/

    /*
     ### Default Settings ###
     eg.: You can override default control like this:
     $.fn.MultiFile.options.accept = 'gif|jpg';
     */
    $.fn.MultiFile.options = { //$.extend($.fn.MultiFile, { options: {
        accept: '', // accepted file extensions
        max: -1,    // maximum number of selectable files

        // name to use for newly created elements
        namePattern: '$name', // same name by default (which creates an array)

        // STRING: collection lets you show messages in different languages
        STRING: {
            remove: 'x',
            denied: 'You cannot select a $ext file.\nTry again...',
            file: '$file',
            selected: 'File selected: $file',
            duplicate: 'This file has already been selected:\n$file'
        },

        // name of methods that should be automcatically intercepted so the plugin can disable
        // extra file elements that are empty before execution and automatically re-enable them afterwards
        autoIntercept: [ 'submit', 'ajaxSubmit', 'ajaxForm', 'validate', 'valid' /* array of methods to intercept */ ],

        // error handling function
        error: function (s) {
            /*
             ERROR! blockUI is not currently working in IE
             if($.blockUI){
             $.blockUI({
             message: s.replace(/\n/gi,'<br/>'),
             css: {
             border:'none', padding:'15px', size:'12.0pt',
             backgroundColor:'#900', color:'#fff',
             opacity:'.8','-webkit-border-radius': '10px','-moz-border-radius': '10px'
             }
             });
             window.setTimeout($.unblockUI, 2000);
             }
             else//{// save a byte!
             */
            alert(s);
            //}// save a byte!
        }
    }; //} });

    /*--------------------------------------------------------*/

    /*
     ### Additional Methods ###
     Required functionality outside the plugin's scope
     */

    // Native input reset method - because this alone doesn't always work: $(element).val('').attr('value', '')[0].value = '';
    $.fn.reset = function () {
        return this.each(function () {
            try {
                this.reset();
            } catch (e) {
            }
        });
    };

    /*--------------------------------------------------------*/

    /*
     ### Default implementation ###
     The plugin will attach itself to file inputs
     with the class 'multi' when the page loads
     */
    $(function () {
        //$("input:file.multi").MultiFile();
        $("input[type=file].multi").MultiFile();
    });


    /*# AVOID COLLISIONS #*/
})(jQuery);
/*# AVOID COLLISIONS #*/
